I agree. For some products like Bobbi Brown, Baressentials ? and L'Occitane QVC is good. However, for status items like handbags and jewellery, QVC is the kiss of death. I used to have some Lulu Guinness bags, but now she is on QVC flogging them to the grannies up north I'm not interested - same goes with Lola Rose, which was only sold in high end boutiques and department stores.
I like buying from niche/unusual/small designers and hate it when a brand I have liked and collected suddenly becomes ubiquitous and known by people who aren't really into fashion.